Glaucoma due to lens swelling

Glaucoma caused by lens swelling is glaucoma associated with intumescent cataract, which refers to glaucoma that occurs during the expansion of senile cataracts or turbid swelling after external lens injuries. The pathogenesis of patients with primary angle-closure glaucoma is closely related to the lens. These patients have a smaller anterior segment, a shallower anterior chamber depth, and a narrower chamber angle. As the age increases, the anterior and posterior diameter of the lens gradually increases, so the gap between the pupil edge of the iris and the anterior capsule of the lens becomes narrower, and even frequent contact occurs. The circulation of aqueous humor through the pupil area is restricted to a certain extent. Under certain conditions, such as long dark room stays, mental factors, and drugs, the pupils are moderately dilated, complete pupillary block may occur, the pressure in the posterior chamber increases, and the peripheral iris swells and attaches to the trabecular meshwork. , Atrial angle block occurs, causing increased intraocular pressure. For the same reason, in patients who do not have the above anatomical and physiological characteristics, simply due to the swelling of the lens can also cause the pupil of the pupil area to closely adhere to the iris and the posterior lens, which may cause intraocular pressure.